import java.util.*;

/**
 * describe:
 *
 * @author helloworldyu
 * @data 2017/12/18
 */
public class TestQueue {
	public static void main(String[] args) {
		Deque<String> deque1 = new LinkedList<>();
		Deque<String> deque = new ArrayDeque<>();
		Queue<String> queue = new PriorityQueue<>();
	}
}